vacuum

[max]

going to fit a set of bike carbs to my 2l pinto with std distributor should i keep my std set up, or fit a non vac distributor and is it worthwhile fitting a sport coil any help would be much appreciated 

[Peter Bell]

Simplest is just use what you have, leave the vac disconnected. The vacuum normally improves fuel consumption at idle and low speeds. If you have servo brakes you can run that from 1 runner, you can’t do that for the vac advance though.

[Jez Morton]

I used vac advance running twin40s on my old rh (single take off), you need a non return valve in the vac line or the dizzy rattles like the bottom ends gone. Trust me that was a a moment of panic.